Wheel puller



' thereto, an inner sleeve UNITED STATES DAVID CLEVELAND JOHNSON, OFCARBON HILL, ALABAMA.

WHEEL PULLER.

Application filed February 2, 1928. Serial No. 251,433.

My invention relates to wheel pullers, par ticularly for use withautomobilelwheels, and has for its object the provision of a device ofthe character designated which shall be adapted, wheels having hubs ofdiiferent diameters.

A further object of my invention is to.

provide a wheel puller embodying a pulling member adated to engage withhubs having threaded en and'also hubs having a collar or lugs thereon.

A more specific object of my invention'is to provide a wheel pullerembodying segmental ulling members adapted to engage threaded wheel hubsof different diameters vor to engage with a puller engaging collar orprojection on the hub, together with means effective to maintain thesegmental pulling members in their proper relation to the rest of thedevice.

Briefly, my invention comprises an outer sleeve having its innerdiameter bored to form the fr'ustum of a cone, segmental hub en agin anhel in predetermined angular relation member screwed into the outersleeve member and bearing against the ends of the segmental hub engaging3 members to cause them to close in upon the ing form ng apart of thisapp wheel hub, and means engaging the axle and cooperatin with the innersleeve member to exert a pul ing efiort on the hub.

A device embodyin features of my invention is illustrated in theaccompanyin drawioation,

wherein Fig. 1 is a longitudinal seetlonal view through the device andshowing it 1n engaged relation with a threadedwheel'hu ig. 2 is atransverse sectional-view along the line II'II of Fig. 1, and

Fig. 3 is a'view similar to Fig. 1 and showing my im roved wheel pullerengaged with a wheel hu having puller engaging pro eetions thereon. K

' Referring now to the drawing for a better understandmg ofmy'invention, I show an axle 10 having a wheel hub 11 mounted thereon.The outer-end of the hub is threaded at 12 in orderto afiord means forengaging a wheel pulling device.- My. improved wheel pulling devicecomprises an outer. sleeve member 13 having 1ts inner surface bored toform the frustum-of a cone 14. Fittinn into the sleeve 13 are foursegmental hu engaging members 16,'each provided with a without change,to be used with,

members fitting within the sleeve" 1 tahen .36 to receive a longitudinalgroove 17 adapted to receive a screw 18. extending through the sleeve 13and which prevents relative turning movement between thesleeve and thesegmental members. The segmental members are held outwardly against thesleeve by means of a spring 19 fitting in a groove 21' formed around theinner sides of the segmental members. The segmental members 16 are boredturn and. bore them from a solid piece and form the grooves 17 therein,then cut them to form the four segments as shown in Fig. 2. When spreadapart, as shown in Fig. 2, the outer surfaces of the segments have theircenter portions engaging with the frustoconical inner surface ofthe'sleeve- 13 andtheir ends slightly away from the inner surface, dueto the inner surface of the cone bemg bored with a different radius thanthe turning radius for the outer. surfaces of the segments. As thesegments are brought closer together by relative longitudinal. movementbetween them and the sleeve to clamp them about a wheel hub, the outersurfaces of the segments present a greater bearing surface to thesleeve. Inasmuch as. the number of threads per inch on all wheel hubs,with which I am familiar, is the same, the internally threaded segments16 are ada ted to fit on the different sized threaded hu s of automobilewheels without damage to the threads.

The other end of thesleeve member 13 is bored cylindrically, andinternally threaded at 32 to receive an inner sleeve member 33 havinsimilar threads 3 1 and having a hexagon l or otherwise suitably shapedhead tool to screw the sleeve 33 into the sleeve 13. In applying thedevice to a wheel hub, the inner sleeve 33 is retracted to allow thesegments to be moved inwardly causing them to spread enough to passeasily over the wheel hub. The inner sleeve member 33 isthen screwedinto the outer sleeve member 13 to force the segments 16 outwardlwhereupon the frusto-conical bore of the s eeve 13 causes the segments16 to be moved inwardly and down over the threads 12 of the hub 11,-asseen in Fig. 1, or until the jaw 27 ed portion 42 of a hydraulic jack cyinder 43.

Fitting within the cylinder 43 is a piston 44 adapted to bear againstthe end of the axle passage 46 extends outwardly from the end of thecylinder 43 and communicates with a plunger cylinder 47 screwed into the1 cylinder 43. Fitting within the plunger cylinder 47 is a plunger 48 inthreaded engagement with a cover 49 screwed on the outer end of thecylinder 47. With the parts in the position shown in Fig. 2 and thecylintions, without departing ders 47 and 43 filled with grease or anysuitable liquid, the plunger 48 is screwed inwardly of the cylinder 47and the pressure so developed is exerted against the piston 44 which, inturn, resses against the end of the axle 10 and p ls'the hub 11 from theaxle.

From the fore oing it will be apparent that I have devised an improvedwheel puller, adapted for use with wheel hubs of various sizes andconfigurations and which is simple of construction and reliable ofoperation.

While I have shown my invention in but one form, it will be obvious tothoseskilled in the art that it is not so limited, but is susceptible ofvarious changes and modificafrom the spint thereof, and I desire,refore, that only such limitations shall be placed thereupon as areimposed by the prior art or as are specifically set forth in theappended claims.

. What I claim is:

v 1. A wheel puller comprising an outer sleeve member having its innersurface bored to form a frustum of a cone, a plurality of internallythreaded segmental hub engaging members fitting within the outer sleeve,an inner sleeve member screwed into the outer sleeve member and bearingagainst the segmental members, said inner sleeve member being internallythreaded, and means screwed into the inner sleeve member and bearingagainst the .wheel axle to exert a pulling force on the hub.

2. In a wheel puller, an outer sleeve memberhaving a portion of itsinner surface bored to form the frustum ofa cone, segmental hub engagingmembers fitting into the frusto-conical portion of the outer sleevemember, an inner sleeve member screwed into I the outer sleeve memberand bearing against I l the ends of the segmental hub engaging membersto cause them to engage the hub, and means cooperating with the innersleeve member to exert a pulling effort on the seg-- mental members.

a 3. In a wheel puller, an outer sleeve memher having one end of itsinner side bored to form the frustum of a tame diminishing indiametertoward the end of the member, segmental hub engaging membersfitting into the frusto-conical portion of the outer sleeve member,resilient means for holding the segmental members in engagement with theouter sleeve member, the other end of the outer sleeve member beinginternally threaded, an inner sleeve member screwed into the other endof the outer sleeve member and bearing against the ends of the segmentalhub engaging members, said inner sleeve member being provided with meanswhereby it may be advanced and retracted in the outer sleeve member tocause the hub en aging members to open or close about a hu and meanscooperating with the inner sleeve member to exert a pulling efiort onthe hub engaging members.

4. In a wheel puller, an outer sleeve memher having one end of its innersurface bored to form the frustum of a cone diminishing in diametertoward the end of the member, segmental hub engaging members fittinginto the frusto-conical portion of the outer sleeve member, resilientmeans for holding the segmental members in engagement with the outersleeve member, the other end of the outer sleeve member being internallythreaded, an inner sleeve member screwed into the other end of the.outer sleeve member and bearing against the ends of the segmental hubengagingmembers, said inner sleeve member being provided with meanswhereby it may be advanced and retracted in the outer sleeve member tocause the hub engaging members to open or close about a hub, andhydraulic means cooperating with the inner sleeve member to exert apulling efiort on the hub engaging members. 7

5. A device as set forth in claim 4 wherein means are provided toprevent relative rotation between the outer sleeve member and the hubengaging members. v

6. In a wheel puller, an outer sleeve mem- "her having one endinternally bored to form a frustum of acone diminishing in diametertoward the outer end of the sleeve and hav ing the other end internallythreaded, a plurality o f,segmental hub engaging members fitting in thefrusto-conical sleeve, a portionv of the internal surface of thesegmental members being threaded and a portion being bored to formapulling jaw, resilient means for holding the segmental members outwardlyagainst the outer sleeve member, an inner isleeve i'nember screwed intothe outer sleeve ;member and hearing a .ains the inner ends of thesegmental mem rs. and adapted to close the segmental members about thewheel 5 the segmentalmembers are provided with exterior longitudinalgrooves and the outer sleeve member is provided with a plurality ofradially extending screws fitting in the grooves to prevent relativeangular movement between the segmental members and the outer sleevemembers.

In testimony whereof I, DAVID Cmvmnn JOHNSON, afiix myisignature. 7

DAVID CLEVELAND JOHNSON.

